Station 1: Levers Flashcards
1
Q
What are the 3 components of a lever system?
A
- Fulcrum: joint
- Load: weight (being moved)
- Effort: force produced by a muscle
2
Q
What is a 1st class lever and it’s advantages?
A
Fulcrum in middle
Advantage: both force and distance depending on position of fulcrum relative to load and effort
3
Q
What is a 2nd class lever and it’s advantages?
A
Load in middle
Advantage: force multiplier
4
Q
What is a 3rd class lever and it’s advantages?
A
Effort in middle
Advantage: distance multiplier
5
Q
Example of 1st class lever
A
Neck and Head Extension
Scissors
6
Q
Example of 2nd class lever
A
Plantarflexion Calf Raise
Wheelbarrow
7
Q
Example of 3rd class lever
A
Bicep Curl
Tweezers
